CN102848156B - Processing method of middle flange of transmission shaft - Google Patents
Processing method of middle flange of transmission shaft Download PDFInfo
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- CN102848156B CN102848156B CN201210357605.7A CN201210357605A CN102848156B CN 102848156 B CN102848156 B CN 102848156B CN 201210357605 A CN201210357605 A CN 201210357605A CN 102848156 B CN102848156 B CN 102848156B
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- transmission shaft
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- intermediate bead
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Abstract
The invention discloses a processing method of a middle flange of a transmission shaft, which comprises the steps that: firstly, the outer surface of the middle flange is processed to the designed diameter by a lathe; secondly, an inner bore of the middle flange is processed to be d-1 mm in size by a boring mill; thirdly, the outer surface of the middle flange is subjected to induction hardening by a hardening device; fourthly, the size of the inner bore of the middle flange is processed to the designed diameter d by the boring mill; and fifthly, internal splines are formed at the inner bore of the middle flange by a broaching machine. The hardening device is an induction hardening device. With the adoption of the processing method of the middle flange of the transmission shaft, the induction hardening requirements of the outer surface are met, the sizes of the internal splines of the middle flange remain the same, the qualification rate reaches 100%, the production cost is reduced greatly, the production efficiency is improved, the part assembly is more convenient, and the market competitiveness of products is improved greatly.
Description
Technical field
The present invention relates to power transmission shaft processing technique field, especially a kind of middle flange of transmission shaft processing method.
Background technology
As shown in Figure 1, existing middle flange of transmission shaft comprises the outer surface 1 of diameter D and the endoporus 2 of diameter d, and endoporus 2 place is provided with internal spline 3.
The internal spline process of existing middle flange of transmission shaft is: first step is, with broaching tool, the internal spline 3 of part is pulled into shape; Second step carries out induction hardening to the outer surface 1 of intermediate bead.The defect that existing processing method exists is: must conduct to internal spline 3 because intermediate bead outer surface 1 heats rear heat, therefore cause internal spline 3 temperature distortion, after cooling, internal spline 3 shrinks 0.2 ~ 0.3mm, thus impact assembling, percent defective reaches 20%, greatly improves production cost.
For the rate of reducing the number of rejects and seconds, reduce production cost, the raising competitiveness of product in market, those skilled in the art should have motivation the process of above-mentioned " after first garland key heating quenching " to be adjusted to " first heating quenching post-tensioning spline ", but are considered to infeasible because this adjust thinking violates the understanding routinely of those skilled in the art.Described be familiar with routinely specifically refer to: quenching can cause workpiece hardening; If first heating quenching, then during quenching, heat can from intermediate bead outer surface 1 to intermediate bead internal spline conduction to be drawn, make this place's temperature distortion and hardening (the reason place that in existing production method, internal spline 3 temperature distortion causes percent defective high just), thus broaching tool cannot be used to process; Even if use broaching tool to process reluctantly, also can significantly reduce production efficiency because broaching tool again and again damages replacing, improve production cost.This understanding routinely makes those skilled in the art when facing " eliminate percent defective, reduce production cost " this technical problem, can think that it is infeasible that production process is adjusted to " first heating quenching post-tensioning spline ".
" elimination percent defective " will inevitably produce high economic benefit, this for any middle flange of transmission shaft the producer all there is the very strong profit property led.But due in the art still nobody recognize the above-mentioned wrong part be familiar with routinely, never occur in decades breaking through above-mentioned understanding routinely thus the processing method eliminating the percent defective of middle flange of transmission shaft.
Summary of the invention
The object of the present invention is to provide a kind of middle flange of transmission shaft processing method of rate of can significantly reducing the number of rejects and seconds.
For achieving the above object, middle flange of transmission shaft processing method of the present invention is carried out successively according to the following steps: first is use lathe that intermediate bead outer surface is worked into intended diameter dimension D; Second is use boring machine that intermediate bead hole size is worked into d-1 millimeter; 3rd is use quenching unit to carry out impewdance matching to intermediate bead outer surface; 4th is use boring machine that intermediate bead hole size is worked into intended diameter d; 5th is use broaching machine at intermediate bead endoporus place pull-out internal spline.
Described quenching unit is induction hardening equipment.
After adopting middle flange of transmission shaft processing method of the present invention, intermediate bead both ensure that the impewdance matching requirement of outer surface, also ensure that the size of intermediate bead internal spline does not change simultaneously, qualification rate reaches 100%, significantly reduce production cost, improve production efficiency, Assembly of the parts is also convenient simultaneously, greatly improves the competitiveness of product in market.
Accompanying drawing explanation
Fig. 1 is the structural representation of middle flange of transmission shaft in the present invention.
Detailed description of the invention
As shown in Figure 1, middle flange of transmission shaft processing method of the present invention is carried out successively according to the following steps:
First is use lathe the dimensioned of intermediate bead outer surface 1 to intended diameter dimension D (as φ 50, i.e. diameter 50 millimeters); Second is use boring machine intermediate bead endoporus 2 dimensioned to d-1 millimeter (d is the intended diameter of intermediate bead endoporus, as φ 34); 3rd is use induction hardening equipment to carry out impewdance matching to intermediate bead outer surface 1 place; 4th be use boring machine by intermediate bead endoporus 2 dimensioned to intended diameter d(as φ 35); 5th is use broaching machine at intermediate bead endoporus 2 place broaching tool pull-out internal spline 3.
After adopting middle flange of transmission shaft processing method of the present invention, intermediate bead both ensure that the impewdance matching requirement at outer surface 1 place, also ensure that the size of intermediate bead internal spline 3 does not change simultaneously, qualification rate reaches 100%, significantly reduce production cost, improve production efficiency, Assembly of the parts is also convenient simultaneously, greatly improves the competitiveness of product in market.In addition, because the processing of intermediate bead endoporus 2 is divided into two benches, two benches is respectively in the front and back of quenching Step, and endoporus 2 shapes (aperture being worked into d-1 millimeter) by previous stage substantially, the latter half is only a small amount of fine finishining, therefore both had in the past first process endoporus 2 then quench facilitate characteristic, after can ensureing completion of processing again, endoporus 2 has accurate intended diameter.
Research and development illustrate:
For the rate of reducing the number of rejects and seconds, reduce production cost, the raising competitiveness of product in market, the inventor of present patent application thoroughly have studied the reason that production method percent defective is high in the past, and seeks the method eliminating percent defective by every means.Seeking to solve in the process of " rate of reducing the number of rejects and seconds thus reduce production cost " this technical problem just, the inventor of present patent application encounters the understanding routinely described in background technology part, and namely " quenching can cause workpiece hardening; If first heating quenching, then during quenching, heat can conduct from intermediate bead outer surface 1 to intermediate bead internal spline 3 to be drawn, make this place's temperature distortion and hardening (the reason place that in existing production method, internal spline 3 temperature distortion causes percent defective high just), thus broaching tool cannot be used to process; Even if use broaching tool to process reluctantly, also can significantly reduce production efficiency because broaching tool again and again damages replacing, improve production cost ".
Owing to seeking to be obstructed for a long time in the process in other solutions, the inventor of present patent application repeatedly studies this and is familiar with routinely, and pass through creative work, mode eventually through verification experimental verification finds that this understanding is not exclusively correct, and wrong part is wherein: show can quench (hardening) phenomenon in this place by the temperature distortion of endoporus 2 spline.In fact, the material temperature distortion at workpiece internal spline 3 place is not equal to this place and quenches (hardening) phenomenon, after surface of the work impewdance matching, on the one hand surface of the work can quench (hardening) phenomenon, workpiece depths (i.e. internal spline 3 place) generation deformation of being heated on the other hand.Whole workpiece quenched so long as not deliberately pursuing and conventional strict control is carried out (after breaching the above-mentioned constraint be familiar with routinely to quenching position and hardening heat etc., this control is the conventional technical ability of those skilled in the art), after can ensureing impewdance matching, internal spline 3 place (position of the surperficial internal spline to be processed of endoporus 2), although can produce certain temperature distortion phenomenon, this position can not produce quenching (hardening) phenomenon.
Because the inventor of present patent application breaches above-mentioned understanding routinely for many years by creative work, just draw the technical scheme in present patent application, and produce excellent technique effect thus, greatly reduce production cost, improve the competitiveness of product in market.
Claims (2)
1. middle flange of transmission shaft processing method, is characterized in that carrying out according to the following steps successively:
First is use lathe that intermediate bead outer surface is worked into intended diameter dimension D;
Second is use boring machine that intermediate bead hole size is worked into d-1 millimeter;
3rd is use quenching unit to carry out impewdance matching to intermediate bead outer surface;
quenching position and hardening heat etc. are controlled, makes the position of bore area internal spline to be processed not produce the hardening phenomenon of quenching;
4th is use boring machine that intermediate bead hole size is worked into intended diameter d;
5th is use broaching machine at intermediate bead endoporus place pull-out internal spline.
2. middle flange of transmission shaft processing method according to claim 1, is characterized in that: described quenching unit is induction hardening equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357605.7A CN102848156B (en) | 2012-09-24 | 2012-09-24 | Processing method of middle flange of transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357605.7A CN102848156B (en) | 2012-09-24 | 2012-09-24 | Processing method of middle flange of transmission shaft |
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| Publication Number | Publication Date |
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| CN102848156A CN102848156A (en) | 2013-01-02 |
| CN102848156B true CN102848156B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210357605.7A Active CN102848156B (en) | 2012-09-24 | 2012-09-24 | Processing method of middle flange of transmission shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105666073A (en) * | 2016-03-21 | 2016-06-15 | 江苏森威集团飞达股份有限公司 | Machining process for electric-driving axle of new energy bus |
| CN105817847A (en) * | 2016-05-30 | 2016-08-03 | 方雪锋 | Processing technology of middle flange of transmission shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000002251A (en) * | 1998-06-12 | 2000-01-07 | Nippon Seiko Kk | Conical roller bearing |
| CN102534374A (en) * | 2012-02-16 | 2012-07-04 | 无锡市万邦机械制造厂 | Method for processing rectangular-tooth spline sleeve using 42CrMoE high-quality alloy steel as material |
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Inventor after: Li Jianxun Inventor after: Zhang Pengchao Inventor after: Cao Shanjiang Inventor after: Zhang Qingke Inventor after: Li Lei Inventor after: Tang Jimin Inventor after: Gu Xianmei Inventor after: Lei Wuran Inventor after: Chai Ershuai Inventor after: Yao Jinye Inventor after: Guo Yaochuang Inventor after: Chen Yunsheng Inventor after: Qi Ruixiao Inventor after: Ma Xiling Inventor after: Zhang Feng Inventor after: Zhou Yongchuan Inventor after: Han Li Inventor after: Shang Guosheng Inventor after: Zhou Jianxi Inventor after: Zhang Junhua Inventor before: Li Jianxun Inventor before: Ma Xiling Inventor before: Zhang Feng Inventor before: Zhou Yongchuan Inventor before: Chen Yunsheng Inventor before: Han Li Inventor before: Shang Guosheng Inventor before: Wang Wen Inventor before: Zhang Pengchao Inventor before: Su Xiangpei Inventor before: Cao Shanjiang Inventor before: Zhang Junhua Inventor before: Zhang Qingke Inventor before: Zhou Jianxi Inventor before: Shi Caixia |
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Free format text: CORRECT: INVENTOR; FROM: LI JIANXUN WANG WEN ZHANG PENGCHAO SU XIANGPEI CAO SHANJIANG ZHANG JUNHUA ZHANG QINGKE ZHOU JIANXI SHI CAIXIA MA XILING ZHANG FENG ZHOU YONGCHUAN CHEN YUNSHENG HAN LI SHANG GUOSHENG TO: LI JIANXUN CHEN YUNSHENG MA XILING ZHANG FENG ZHOU YONGCHUAN HAN LI SHANG GUOSHENG ZHOU JIANXI ZHANG JUNHUA ZHANG PENGCHAO CAO SHANJIANG ZHANG QINGKE LI LEI TANG JIMIN GU XIANMEI LEI WURAN CHAI ERSHUAI YAO JINYE GUO YAOCHUANG QI RUIXIAO |
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